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Right now there are not a ton of great options, lots of options out there for 9mm semi's, but many are compromised either by cheap/ poor design, or by poor ergonomics/ overly bulky. The best design is still something very similar to the MP5, so the closest that you can get to that right now is the Famae SAF fitted with a long barrel, but availability is difficult and expensive, and may still require a rebarrel to gain NR status.
In the hopefully near future, restricted and non-restricted versions of both the Sig MPX and the CZ Evo Scorpion will become somewhat available. For a 9mm semi I will be looking long and hard at the MPX. Design and ergonomics seems a step above most competitors currently, and the CZ is a close second.